Navegando por Autor "Barreto, Matheus Dantas de Araújo"

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Large solitary fibrous tumor of the oral cavity - Report of a case
(2014) Oliveira, Denise Hélen Imaculada Pereira de; Albuquerque, Assis Filipe Medeiros; Barreto, Matheus Dantas de Araújo; Nonaka, Cassiano Francisco Weege; Silva, José Sandro Pereira da; Germano, Adriano Rocha; Queiroz, Lélia Maria Guedes
The solitary fibrous tumor (SFT) is a rare soft tissue tumor with a substantially benign clinical behavior. The SFT of the oral cavity is a very uncommon entity. It is also of complicated diagnosis because of its extensive morphologic diversity and because of its similarity to many mesenchymal tumors. A 44-year-old man was referred for management of an asymptomatic lesion in the left buccal mucosa, which had been identified 10 years earlier. Intra-oral examination revealed a well-demarcated, fibroelastic, rounded exophytic mass located in the left buccal mucosa. The mass was covered with a non-ulcerated mucosa of normal color and measured approximately 4.0 cm in diameter. Histopathological examination showed proliferation of spindle-shaped cells arranged in fascicles and in a patternless pattern, highly vascularized, with focal staghorn vessels. Immunohistochemical analysis revealed diffuse positivity for CD34 and focal positivity for Bcl-2. Awareness of the morphological diversity of SFT coupled to a judicious use of appropriate immunohistochemical probes should prove valuable to accurately segregate SFT from other spindle cell neoplasms.

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